illuminance

noun
il·​lu·​mi·​nance | \i-ˈlü-mə-nən(t)s \

Definition of illuminance 

First Known Use of illuminance

circa 1938, in the meaning defined above

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The first known use of illuminance was circa 1938

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illuminance

noun
il·​lu·​mi·​nance | \il-ˈü-mə-nən(t)s \

Medical Definition of illuminance 

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